Cache contains only ascii in StringImpl

third_party/WebKit/Source/wtf/text/WTFString.h

Index: third_party/WebKit/Source/wtf/text/WTFString.h
diff --git a/third_party/WebKit/Source/wtf/text/WTFString.h b/third_party/WebKit/Source/wtf/text/WTFString.h
index 7460ac18cfe83a0f960a9c98ada72ba51fb29ae9..0f61a94e18b30d4f7035dcd8fa59cedd5b0319d7 100644
--- a/third_party/WebKit/Source/wtf/text/WTFString.h
+++ b/third_party/WebKit/Source/wtf/text/WTFString.h
@@ -408,7 +408,9 @@ class WTF_EXPORT String {
                                       length);
   }
 
-  bool containsOnlyASCII() const;
+  bool containsOnlyASCII() const {
+    return !m_impl || m_impl->containsOnlyASCII();
+  }
   bool containsOnlyLatin1() const;
   bool containsOnlyWhitespace() const {
     return !m_impl || m_impl->containsOnlyWhitespace();
@@ -556,16 +558,6 @@ inline NSString* nsStringNilIfEmpty(const String& str) {
 }
 #endif
 
-inline bool String::containsOnlyASCII() const {
-  if (isEmpty())
-    return true;
-
-  if (is8Bit())
-    return charactersAreAllASCII(characters8(), m_impl->length());
-
-  return charactersAreAllASCII(characters16(), m_impl->length());
-}
-
 WTF_EXPORT int codePointCompare(const String&, const String&);
 
 inline bool codePointCompareLessThan(const String& a, const String& b) {